All, or nearly all, of the injuries sustained during the Boston Marathon bombing, were fake. There may have been some real injuries; but after many hours of careful examination by many dedicated investigators, a verified serious injury from the "bombs" has yet to be found.
For indisputable proof of an "amputee actor" at the Boston Marathon bombing, see - https://archive.org/details/CrisisActorsPreparingDoubleAmputee
Evidence is also being collected, showing that the so-called pressure cooker "shrapnel bombs", did not cause any shrapnel damage, and did not leave any visible evidence that they contained shrapnel at all.
It also appears that the great majority of "doctors" and "EMTs" within the bombing scenes are fake. There are some real firemen and real EMT's on the periphery of the scene, administering real medical treatments (such as IV drip and oxygen). However, consider that if an actor (or anyone else) says that they are having 'chest pains' from stress of anxiety, these people are required by law to treat it as a heart attack, and administer appropriate treatment with no visible injuries. It seems that's what happened in those cases.
You may also find these interesting:
Boston Emergency Hospital Unintentionally Confirms - The Injuries Are FAKE
EXPOSED - Boston Bomb Amputee Karen Rand Seen Wiping Fake Bood On Legs (and More)
Caught Red Handed - The Fake Blood Handlers at the Boston Marathon Bombing - AnonPyrates
'Miss Shawl' - Another Proven Fake Injury from the Boston Marathon Bombing
GASH LADY - Another Proven Fake Injury, from the Boston Marathon Bombing - VTI
'The Newlyweds' - Another Proven Fake Injury from the Boston Marathon Bombing - - VTI
Boston Marathon Bombing Archive - VTI
Boston Manhunt Timeline - Exhibits
Boston Propaganda Marathon - Bruce Mendelsohn And The Boston Bombing
Boston Bombings "Hoodie Sunglass" Guy - The JOHN KERRY Connection
THE DEVICE - The REAL Boston Marathon Bomb, Revealed In Photographs - VTI
Amputee Actors Help Make Boston Marathon Bombing Hoax Look Real
Epic Evidence - Spy and 'Defense' Corporations Directly Involved In Boston Bombing